To reach the office by Metro:

Take a Red Line train to Union Station. Exit the platform the direction of Amtrak or Amtrak/First Street. After you go up the first set of escalators and through the metro turnstile, exit the building by going down the ramp and through the doorway onto First Street (do not go up the second set of escalators, which take you into Union Station, itself). Once on the sidewalk, turn right and walk about three blocks, passing under the third overpass (which is H Street). Our building is in a cluster of buildings after the H Street overpass. 820 is the building in the rear of the courtyard with the multi-colored statue in front.